Characteristic and drug resistance of pathogens in children with intractable mycoplasma pneumonia and changes of serum IL-18 and IL-33 levels / 中国基层医药

ABSTRACT

Objective@#To investigate the characteristics and drug resistance of pathogenic bacteria of refractory mycoplasma pneumonia in children and the changes of serum interleukin-18 (IL-18) and interleukin-33 (IL-33) levels.@*Methods@#From January 2016 to December 2017, 103 children with refractory mycoplasma infection admitted to the Maternal and Child Health Hospital of Zhoushan were selected in the study.Another 60 healthy subjects in our Hospital from January 2016 to December 2017 were selected as control group.The oropharyngeal secretions were collected in all children with refractory mycoplasma pneumonia, isolated and cultured pathogenic bacteria.Disk diffusion (K-B method) was used to detect the drug resistance of the main pathogens.Enzyme-linked immunosorbent assay was used to determine serum IL-18 and IL-33 levels.@*Results@#The 117 strains of pathogenic bacteria were isolated from 103 children with refractory mycoplasma infection, of which 68 strains (58.12%) were Gram-negative bacilli, 39 strains (33.33%) were Gram-positive cocci, and 10 strains (8.55%) were fungi.Klebsiella pneumoniae was more resistant to cefuroxime than Acinetobacter baumannii to cefuroxime and ceftriaxone.Staphylococcus aureus and Staphylococcus epidermidis were more resistant to erythromycin and penicillin G than other Gram-positive cocci.The levels of serum IL-18 and IL-33 in the study group were higher than those in the control group (all P<0.05).@*Conclusion@#Gram-negative bacilli are the main pathogens of refractory mycoplasma pneumonia in children.The resistant rate of main Gram-negative bacilli to cephalosporins is higher.The resistant rate of main Gram-positive cocci to penicillin G and erythromycin is higher.The levels of serum IL-18 and IL-33 are significantly higher in patients with refractory mycoplasma pneumonia.